Adjustable window-ventilator.



A e. P. DE LANCE. ADmstA'BLE WINDOW VENTIL'ATOR. APPL'l-CATIDN FILED` DEC. l, 1 916..

f 1249,953; Patented Sept. 25,' 19,17.

CHANDILEIB. P. DE LANCE, OF COLUMBUS, NEBRASKA..

ADJUSTABLE WINDOWTVENTILATOB..

Specication of Letters Patent.

Application med-December 1, 1916. Serial No. 134,347.

To aZZ whom t may concer/n.' i

Be it `known that I, CHANDLER P. DE LANCE, a citizen of the United States, residing at Columbus,in the county of Platte and State of Nebraska, have invented certain new and useful Improvements in Adjustable Vindow-Ventilators, of which the following is a specication.

rIhis invention relates to window ventilators and comprises particularly a ventilator of extremely simple and durable sconstruction, made up of a plurality of overlapping sections which may be adjusted to fit any window, andwhichA when locked together in position are so rmly secured to each other as to prevent any rattling from gusts of wind striking the same. t A

One feature of the' device is the novel means for locking the sections together in such way Aas to entirely prevent rattling or relative longitudinal movement. Another feature of the device is the ease with which it may be removed from the window, taken apart, andl packed for shipment. Other features of novelty and utility will be made apparent in the following description.

One form/of the invention is illustrated.

in the following drawings, of which- Figure 1 is a perspective view of the ventilator in position;

Fig. 2 is a vertic of Fig. l;

Fig; 3 is a longitudinal section; and

Fig. 4 is an enlarged detail view of the upper curved portions of the two sections. The ventilator is made up of usually two sections 5 and 6 and'sidemembers? and 8. The sections 5 and 6, which are adapted to be inclined upwardly'away from the window, have curved portions 9 and 10 at the top which terminate in iiat angularly disposed portions 11 and 12. rlhe curved portion 9 'is of suchpsize and contour that it may be slid longitudinally in the curved portion 10 when the sections 5 and 6 arevat an .angle to each other fas shown 'in ,Fig. 4.

When section 5 is turned so as to lie liat against section 6 the curved portions 9 and 11 of section 5 are wedged tightly against the corresponding parts of section 6 and'can no longer be moved longitudinally with respect to section 6.

The sections 5 and 6 have extensions 13 at their bottom provided with holes 14 for l l section on the line 2 2" tion with respect to another. about the reception 'of screws orother fastening means. 'The outer' ends of the sections are Patented sept. e5, wat.

turned back as at 15 so as to slidably engage the' parts 16 of the side members 7 and 8.

y 'lhe side members 7 and 8 are preferablyv triangular yin form and are provided with notches 17 adapted to engage a projection or screw 18 in the window-frame W.

When the ventilator is to be placed in a .window the side members 7 and 8 are slid on to the sections 5 and 6; the sections are then brought together` at anl angle as shown in Fig. 4 and adjusted to the length of the window. The side members are then slipped on to the projections 18 and the sections are fastened in place by screws through the holes 14. y Y

A great advantage in 'having the top part of the sections curved toward the window is that these curved parts prevent rain from being blown over the top of the sections into the room.

l wish it to be understood that my invention is not in the accompanying drawings but-may be modified in Avarious .details withoutdeparti ing 'frornthe scope of the invention as set forth in the accompanying claims.

l. An adjustable window ventilator comprising a plurality of sections adapted when forming an integral part of each of said sections for firmly locking the sections together against relative longitudinal movementwhile permitting angular movement of one seca horizontal axis into a position permitting of relative longitudinal movement of said sections. v

, 2. ln an adjustable window ventilator a ,plurality of sections adapted to form a wind screen, the upper part of each of said sections being curved, the extent and contour of the curved portions being such as to permit the curved portion of one section to slide longitudinally in that of another section when the sections are angularly disposed with respect to each other, but to prevent such longitudinal movement when the sections have been forced into substantially the same plane.

3. ln an adjustable window ventilator a plurality of sections adapted to form a wind limited to the embodiment shown v screen, the upper partl of eaeh of said sedi' but/to prevent such longitudinal movement j .tions being curved toward the Window, the when thesections have been forced into subextent'and Contour of the curved portions Stantially the same plane, and means for 10 being such as to permit the curved portion holding said sections in 'substantially the 5 of one section to slide longitudinally in that same plane. L of another section when the setions are an- In testimony whereof I ax my signature, gularly disposed with respect to each other, lCHANDLER P. DE LANCE. 

